Exercise and tone all your major muscle groups with the Marcy 50-Pound Kettle Weight Set (VKBS50). Youll increase strength and endurance, burn fat and lose weight with a regular kettle workout routine. The weights are made of solid cast iron and have a rubber-coated exterior and large handles for comfort and easy gripping. This set of 4 kettle weights includes one 5-pound, one 10-pound, one 15-pound and one 20-pound weight. Two-year limited warranty.